Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Block layer code related to image creation |
| 3 | * |
| 4 | * Copyright (c) 2018 Kevin Wolf <kwolf@redhat.com> |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include "qemu/osdep.h" |
| 26 | #include "block/block_int.h" |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 27 | #include "qemu/job.h" |
Markus Armbruster | db72581 | 2019-08-12 07:23:50 +0200 | [diff] [blame] | 28 | #include "qemu/main-loop.h" |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 29 | #include "qapi/qapi-commands-block-core.h" |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 30 | #include "qapi/qapi-visit-block-core.h" |
| 31 | #include "qapi/clone-visitor.h" |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 32 | #include "qapi/error.h" |
| 33 | |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 34 | typedef struct BlockdevCreateJob { |
| 35 | Job common; |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 36 | BlockDriver *drv; |
| 37 | BlockdevCreateOptions *opts; |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 38 | } BlockdevCreateJob; |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 39 | |
John Snow | f67432a | 2018-08-29 21:57:26 -0400 | [diff] [blame] | 40 | static int coroutine_fn blockdev_create_run(Job *job, Error **errp) |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 41 | { |
John Snow | f67432a | 2018-08-29 21:57:26 -0400 | [diff] [blame] | 42 | BlockdevCreateJob *s = container_of(job, BlockdevCreateJob, common); |
John Snow | eb23654 | 2018-08-29 21:57:31 -0400 | [diff] [blame] | 43 | int ret; |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 44 | |
| 45 | job_progress_set_remaining(&s->common, 1); |
John Snow | eb23654 | 2018-08-29 21:57:31 -0400 | [diff] [blame] | 46 | ret = s->drv->bdrv_co_create(s->opts, errp); |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 47 | job_progress_update(&s->common, 1); |
| 48 | |
| 49 | qapi_free_BlockdevCreateOptions(s->opts); |
John Snow | f67432a | 2018-08-29 21:57:26 -0400 | [diff] [blame] | 50 | |
John Snow | eb23654 | 2018-08-29 21:57:31 -0400 | [diff] [blame] | 51 | return ret; |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 52 | } |
| 53 | |
| 54 | static const JobDriver blockdev_create_job_driver = { |
| 55 | .instance_size = sizeof(BlockdevCreateJob), |
| 56 | .job_type = JOB_TYPE_CREATE, |
John Snow | f67432a | 2018-08-29 21:57:26 -0400 | [diff] [blame] | 57 | .run = blockdev_create_run, |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 58 | }; |
| 59 | |
Kevin Wolf | 3fb588a | 2018-05-25 18:24:51 +0200 | [diff] [blame] | 60 | void qmp_blockdev_create(const char *job_id, BlockdevCreateOptions *options, |
| 61 | Error **errp) |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 62 | { |
| 63 | BlockdevCreateJob *s; |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 64 | const char *fmt = BlockdevDriver_str(options->driver); |
| 65 | BlockDriver *drv = bdrv_find_format(fmt); |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 66 | |
Philippe Mathieu-Daudé | d90d5ca | 2019-09-12 00:08:49 +0200 | [diff] [blame] | 67 | if (!drv) { |
| 68 | error_setg(errp, "Block driver '%s' not found or not supported", fmt); |
| 69 | return; |
| 70 | } |
| 71 | |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 72 | /* If the driver is in the schema, we know that it exists. But it may not |
| 73 | * be whitelisted. */ |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 74 | if (bdrv_uses_whitelist() && !bdrv_is_whitelisted(drv, false)) { |
| 75 | error_setg(errp, "Driver is not whitelisted"); |
| 76 | return; |
| 77 | } |
| 78 | |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 79 | /* Error out if the driver doesn't support .bdrv_co_create */ |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 80 | if (!drv->bdrv_co_create) { |
| 81 | error_setg(errp, "Driver does not support blockdev-create"); |
| 82 | return; |
| 83 | } |
| 84 | |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 85 | /* Create the block job */ |
| 86 | /* TODO Running in the main context. Block drivers need to error out or add |
| 87 | * locking when they use a BDS in a different AioContext. */ |
| 88 | s = job_create(job_id, &blockdev_create_job_driver, NULL, |
| 89 | qemu_get_aio_context(), JOB_DEFAULT | JOB_MANUAL_DISMISS, |
| 90 | NULL, NULL, errp); |
| 91 | if (!s) { |
| 92 | return; |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 93 | } |
Kevin Wolf | e5ab434 | 2018-01-18 14:33:04 +0100 | [diff] [blame] | 94 | |
| 95 | s->drv = drv, |
| 96 | s->opts = QAPI_CLONE(BlockdevCreateOptions, options), |
| 97 | |
| 98 | job_start(&s->common); |
Kevin Wolf | b0292b8 | 2018-01-09 16:50:57 +0100 | [diff] [blame] | 99 | } |